Change Details

The right unwinding stop indicator should be CFI-undefined PC. https://dwarfstd.org/doc/Dwarf3.pdf - page 118: If a Return Address register is defined in the virtual unwind table, and its rule is undefined (for example, by DW_CFA_undefined), then there is no return address and no call address, and the virtual unwind of stack activations is complete. That is allows gdb and libunwind sucessfully stop when unwinding stack from global constructors and destructors. There is no need to annotate registers offsets due to rtld_start is the latest frame in the call chain.

The right unwinding stop indicator should be CFI-undefined PC. https://dwarfstd.org/doc/Dwarf3.pdf - page 118: If a Return Address register is defined in the virtual unwind table, and its rule is undefined (for example, by DW_CFA_undefined), then there is no return address and no call address, and the virtual unwind of stack activations is complete. That is allows gdb and libunwind successfully stop when unwinding stack from global constructors and destructors. There is no need to annotate registers offsets due to rtld_start is the latest frame in the call chain.

The right unwinding stop indicator should be CFI-undefined PC. https://dwarfstd.org/doc/Dwarf3.pdf - page 118: If a Return Address register is defined in the virtual unwind table, and its rule is undefined (for example, by DW_CFA_undefined), then there is no return address and no call address, and the virtual unwind of stack activations is complete. That is allows gdb and libunwind successfully stop when unwinding stack from global constructors and destructors. There is no need to annotate registers offsets due to rtld_start is the latest frame in the call chain.